A protract is a tool used in math class. You generally start learning how to use it in 5th grade. A protractor is used to measure the angle between two lines that intersect.
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A Protactor is used to measure different andgle by putting the middle of the protactor ( occasionally it should have a dot on the protractor / where you want to measure) then you either measure the reading the measurements inside or out.
Degrees of angles are measured with a protractor.
with a protactor......
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The Gaussian distribution is the single most important distribution.